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Deputy County Attorney Shawn Thomas said Andrew Ibey, 27, was released because there was insufficient evidence.

Missoula Police Detective Sergeant Jim Klawitter said investigators are still working on the case.

"We are still conducting an investigation and charges are possible," said Klawitter.

If charges are filed he will be summoned to appear in court.

Ibey was arrested Tuesday afternoon after someone reported seeing a pipe bomb in the garage of a Missoula home. A second person, 40-year-old Shelly Turbitt, was also arrested on suspicion of a probation violation.

According to the Missoula County jail roster, Ibey was released from jail Thursday evening. Turbitt remained in custody Friday.

Law enforcement evacuated several homes Tuesday afternoon while the bomb squad deactivated the bomb. No other bombs were found on the property.

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